Cylinder engine



March 12, 1929. M. BIRKIGT CYLINDER ENGINE Filed June 20, 192'? mwen.

Patented lider, i2, i'g.

naires stares scatena". erstes, j

Mano emmer, oFl Bois-ooL'oifLJEs,4 rennen.

CYLINDER ENGINE.

Application led June 20, i927, VSerial No.'200,215, and in BelgiumAugust 12, 15526.V

of simpler construction and more easily.

1o mounted than has hitherto been the case, and that, where a portion oithe fluid con- I tained in thejacket is in direct Contact with thecylinder,f1nore eiiicient'fluid-tight oints Y .may be formed at thepointsof connection of the jacket to the cylinder. 1

` The jacket provided for the cylinder or cylinders of the engineincludes in a known Ymanner, parts capping the cylinder or cylinders andenveloping itl orthem laterally 2o atleast in part s o that the fluidcontained in the jacket will be in direct contact with the lateral wallor walls of the said cylinder or cylinders.' l Y Y According to the.invention the jacket is so formed that it comprises a portion whichforms the upperend of the cylinder and is connected to or extends intothe jacket proper, and screw threaded sol that the upper end oi'the'cylinder, which is correspondingly threaded, vmay Vbev screwed"thereinto. The lower extremity or edge loi said portion (3o-operateswith a collar on the said cylinder, and .appropriatepacking means isinterposed between the collar, and the said lower edge of said'portion.`The lower eX- tremty of the portion of the. jacket enveloping thecylinders isV closed by a wall, in j which circular' openings are formedtoreceive the said cylinders, and appropriate @packing means areVprovided for insuring fluid-tight joints between said openings and thecylinders. c v

In order that the invention may be clearly understood, it will now Ybedescribed with reference to the accompanying drawing, but it is te beobservedthat the description and drawings are given merely by way ofexample. j

Fig'.` 1 is a diz'igranimatc vertical axial section oi the cylinderY ofan internal combustion engine provid'edywith a jacket for waterconstructed according to the inven# tion, the section being taken on theline lee-1,

arrow' that figura .ings c to receive spark plugs.

wall of the cylinder.

" d iooltingin the direction of 'the l i A y vtigght joint between thecylinder the .Fig 2 is a'section onI the line2-`2, Fig.` j l `an alloy'of aluminium, orrfrom any other inetalhaving like properties'. l' v YThe .jacket comprises a Ipart a mounted o5, onthe upper end ofthecylinder b. 'This Y part a comprises a sort ofinverted basin, thesidewall oi which istraversed by 'open-f The bottom of the basin isprovided withseats for the 7o intake and'ezihaust Valves, only one ofwhich disshown; V The Yportion 'a Vis formed `with conduits ecommunicating `with said'k seats vand with bosses rwhich are perforatedvto serve "as guidesV for the"valvejrodsLV l j Depending 'troni thepart-a isia part 7 which envelops at least parts of the wallsroivi Y thecylinder, so that, when the oints'between the part f and the wall ofthercylinderx'are between the part f and the exterior ofthe cylinderWall isvin direct contact with-the The interior of theY sidewall oftheinverted basin-like part of the part a of the' jacket below theV openingc is, for an ap- Y prop'riate distance, cylindrical and: of a di-`arneter equal to the outer diameter ofthe` cylinder. It Iisinternallyscrew threaded at g and terminates 'at its lower end in aj'flat horizontal edge h.. The .part fof thejacket Y' is so lconstructedthat,A once the cylinder 1s in position, tight jointsgare formed in anyappropriate manner between its upperv and lower ends and the upper andlower ends, respectively, of the cylinderinthe manner. about to bedescribed.

TheA cylinder bconsists of ai tube open at both ends, and Ahaving itslupper end eX- ternally screw threaded` so thatit is adapted to screwinto the screw threaded portion g of the part a, It alsol has, adjacentits upj per end,va collar i which is adapted, when the cylinder' isscrewed home-into the screw threaded portionA of the part a, to bearagainstthe iattened edge '71, of the portion a; and packing isinterposed. between. the flange or 'edar and said edge it so that a.

80j/ made tight, the water contained in the spaceA v v jacket at thisend is ensured. seen the member a forms the upper end of the cylinder.

In the preceding description it is assumed Vthatkthe engine isa single'cylinder' engine.

It the engine comprises a plurality of cyl-y inders, the jacket is ofthe type shown in Fig. 2, the parts a associated with the dit ferent'cylinders being connected on the one lhand to the wall of the waterjacket ,70] by means of Z which are traversed by the openings c for thespark plugs. The water jacket wall 7; is closed at the lower extremityet the jacket by means'v o a base m in ywhich are provided circularopenings to permit ofthe passage of the difger'ent cylinderstherethrough.

, In orderv to ensurel a tight joint' between each cylinder b and tlijelower extremity et ,itsv associated jacket portion f, the following imeans arevpreferably provided;

The' cylinder is provided,' adjacent' its lower end, witlra cylindricalcollar a of A'greater diameter than the collar e' and also ofrgreaterdiameter than thatiot any of the strengthening ribs which may be formedon the exterior of theI cylinder. p The lower lend of the jacket fisprovided witli a bore through whiclithe said collar passes, thus formingan annular space between the lower surface of collar@7 the innercylindrical sur tace votthe lower eXtremit. otacketfj and c Y l, 7

the outer wall of cylinder Packing p is rammed inte the annular spacebetween jacket f and cylinder i, belen7 the collar n and is compressedtherein byla pressure ring g which is screw threaded on its innerperimthe cylinder.

eterto engage screw threads on the wall of The advantages of this formof asseinbly'are A (l.) the jacket walls f may be made thin, thi` sdiminishing the Weight of the motor casting; (2) as a result of thethii'messrof jacket wal-l f, the distance be- "tn/'een adjacentcylinders is diminished with consequent diminution of the lengthof the"crank sha't't and the weight and length of the Y ,meten The pressurering g may be ribbed and preferably is split to permit its diameter.

As will be to be reduced and tofacilitate its insertion within the lowerend ot the jacket wall f,

By this means both a satisfactory tight oint is formed and provision ismade for sliding movement between the end of the jacket and the collarso that differences between the eX- pans-,ions of vthe jacket, which maybe of aluminiunfi5 and of the cylinder, which may Vbe of steel of high'resistance, arecompenapplication or to those constructionalr ein-vbodiments of its various parts which have beenv more particularlyindicated above.A All modilications are included, falling witlr in afair interpretation of the claim.,

W'hat I claiina-nd desire to Vsecure Lietters Patent oit the UnitedlStates of America is j' j j A motor yassembly comprising inl comtormedwith an internalcylindrieal sealing" surface, an operi-ended cylinderremovably connected at oneiofi its extremities'to said jacket adjacentthe head thereof,E ,said ey'linder having its free extremity projectingbeyond .the sealing'surface andv having .anV

annular external projection formed thereon intermediate. itsextremities, said annular projection having a diameter corresponding` tothat of the cylindrical sealing surface of the jacket anda length lessthan that of the sealing surface of said jacket, means for packing thefree vspace between the .cylinder andthe cylindrical.sealing` surface.et the 'tov VV bination7 a hollow jacket, said jacket being' jacket, andmeans insertable from the crank shaft end of the cylinder iormaintaining' said last-named means'in position. Y

In witness whereof I afix my signature.'

'MARC meiner,"

